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Finding the Fourth Proportional to 156,085.96, 215,398.63 and 84,465.98

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Solution

The fourth proportional to 156,085.96, 215,398.63 and 84,465.98 is: 116,563.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,085.96 : 215,398.63 = 84,465.98 : x
  2. Step 2: Convert to fraction form
    156,085.96/215,398.63 = 84,465.98/x
  3. Step 3: Cross multiply
    156,085.96x = 215,398.63 × 84,465.98
  4. Step 4: Simplify right side
    156,085.96x = 18,193,856,373.61
  5. Step 5: Solve for x
    x = 18,193,856,373.61/156,085.96
  6. Step 6: Final answer
    x = 116,563.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.